`cputime', `tstart', `tstop'
----------------------------

cputime(ONOFF)
     ::  0 Ȃ `cputime' ̕\~߂. ȊOȂΕ\
     s.
tstart()
     :: CPU time vJn.
tstop()
     :: CPU time vIѕ\.

RETURN
     0
ONOFF
     tO (C)

   * `cputime()' ,  0 Ȃ CPU time ̕\~߂. ȊO
     ȂΕ\s.
   * `tsart' ͈Ȃ, `()' Ȃ, CPU time vJn.
   * `tstop' ͈Ȃ, `()' Ȃ, CPU time vI, ѕ\
     .
   * `cputime(ONOFF)'  `ctrl("cputime",ONOFF)' Ɠł.
   * `tstart', `tstop' , qɂĎg邱Ƃ͑z肵ĂȂ
     , ̂悤ȉ\ꍇɂ, `time()' ɂvsKv
     .
   * `cputime()' ɂ on, off , Pɕ\ on, off ł, gbv
     ẍ̕ɑ΂v͏ɍsĂ. , vZn
     ߂Ăł, vZIOɃfobKɓ `cputime(1)' s
     ΌvZԂ͕\.

     [49] tstart$
     [50] fctr(x^10-y^10);
     [[1,1],[x+y,1],[x^4-y*x^3+y^2*x^2-y^3*x+y^4,1],[x-y,1],
     [x^4+y*x^3+y^2*x^2+y^3*x+y^4,1]]
     [51] tstop$
     80msec + gc : 40msec
     [52] grm(katsura(4),[u4,u3,u2,u1,u0])$
     ^Cinterrupt ?(q/t/c/d/w/?) d
     stopped in gbcheck at line 186 in file "./gb/gr"
     186                     if ( !ZERO(H) )
     (debug) print cputime(1)                 
     cputime(1) = 0
     (debug) c
     580msec + gc : 320msec
     [53] 

Q
     `time', `ctrl'

